Kenneth S. answered • 12/05/17

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**Any**of the factors of 12 (1, 2, 3, 4, 6 and 12 itself) are to be considered as possible numerators (plus or minus), combined with

**any**of the factors of 6 (1,2,3,6) as denominators, as representative of POSSIBLE rational zeros.

Thus, for example one half, one third, ...one sixth are possible rational zeros, as are their negatives.

Other examples include ±2/3 and ±3/2